# bloomWatch vs Kor Mobile

bloomWatch and Kor Mobile are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | bloomWatch | Kor Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (12 ratings)](https://appshunter.io/ios/app/bloomwatch/id1107300124/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free | — |
| Size | 216 MB | 41 MB |
| Requires iOS | **13.0** | 14.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United States Environmental Protection Agency (USEPA)](https://appshunter.io/developer/466052690) | [Xylem Inc.](https://appshunter.io/developer/582035368) |

## What reviewers say

### bloomWatch

[App page](https://appshunter.io/ios/app/bloomwatch/id1107300124)

This app allows users to document and track the occurrence of freshwater algae blooms. Your submissions help scientists and public health officials monitor water quality and manage resources for recreation and potable water.

**Highlights:** Document algae bloom occurrences, Track bloom location and frequency, Contribute to water quality monitoring, Support scientific research, Report potentially harmful blooms

**Features:** macOS Compatibility

**In-app purchases:** none


### Kor Mobile

[App page](https://appshunter.io/ios/app/kor-mobile/id6452316081)

**In-app purchases:** none


## Frequently asked questions

### Is bloomWatch free?

bloomWatch is free to download, with no in-app purchases.

### Is Kor Mobile free?

Kor Mobile is free to download, with no in-app purchases.

### Do bloomWatch or Kor Mobile have ads?

Neither bloomWatch nor Kor Mobile shows ads.

### Which is updated more often, bloomWatch or Kor Mobile?

bloomWatch ships an update every 4 months, and Kor Mobile every 4 months. Most recently, bloomWatch was updated on October 14, 2026 and Kor Mobile on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*